convert pallete CorelDraw X7 to Corel Draw X4

How to convert a of the latest palette Corel Draw X7 (eg PantonePlusColorBridgeCoated.xml) into Corel Draw X4 (ideally eg  PantonePlusColorBridgeCoated.cpl or PantonePlusColorBridgeCoated.ai or PantonePlusColorBridgeCoated.aco)?

Thaks.